i think i need a new ipod touch

lately my ipod touch has had horrible battery life. it last about 4 hours on video and 8 with audio. i bought my ipod on december 24 and i doubt my warranty is still active. my question is can i make my battery life longer without turning down brightness. which i have an autoset

lately my ipod touch has had horrible battery life. it last about 4 hours on video and 8 with audio. i bought my ipod on december 24 and i doubt my warranty is still active. my question is can i make my battery life longer without turning down brightness. which i have an autoset